The original post only has US helplines. I’ve added UK helplines underneath. It would be great if people could add numbers from everywhere in the world.

Depression Hotline: 1-630-482-9696

Suicide Hotline: 1-800-784-8433

LifeLine: 1-800-273-8255

Trevor Project: 1-866-488-7386

Sexuality Support: 1-800-246-7743

Eating Disorders Hotline: 1-847-831-3438

Rape and Sexual Assault: 1-800-656-4673
Grief Support: 1-650-321-5272

Runaway: 1-800-843-5200, 1-800-843-5678, 1-800-621-4000

Exhale: After Abortion Hotline/Pro-Voice: 1-866-4394253

Child Abuse: 1-800-422-4453
UK Helplines:

Samaritans (for any problem): 08457909090 e-mail jo@samaritans.org

Childline (for anyone under 18 with any problem): 08001111

Mind infoline (mental health information): 0300 123 3393 e-mail: info@mind.org.uk

Mind legal advice (for people who need mental-health related legal advice): 0300 466 6463 legal@mind.org.uk

b-eat eating disorder support: 0845 634 14 14 (only open Mon-Fri 10.30am-8.30pm and Saturday 1pm-4.30pm) e-mail: help@b-eat.co.uk

b-eat youthline (for under 25’s with eating disorders): 08456347650 (open Mon-Fri 4.30pm – 8.30pm, Saturday 1pm-4.30pm)

Cruse Bereavement Care: 08444779400 e-mail: helpline@cruse.org.uk

Frank (information and advice on drugs): 0800776600

Drinkline: 0800 9178282

Rape Crisis England & Wales: 0808 802 9999 1(open 2 – 2.30pm 7 – 9.30pm) e-mail info@rapecrisis.org.uk

Rape Crisis Scotland: 08088 01 03 02 every day, 6pm to midnight

India Self Harm Hotline: 00 08001006614

India Suicide Helpline: 022-27546669

Kids Help Phone (Canada): 1-800-668-6868, Free and available 24/7